Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154215
Title: Enhancing the electrochemical doping efficiency in diketopyrrolopyrrole-based polymer for organic electrochemical transistors
Authors: Wu, Xihu
Liu, Qian
Surendran, Abhijith
Bottle, Steven E.
Sonar, Prashant
Leong, Wei Lin
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Wu, X., Liu, Q., Surendran, A., Bottle, S. E., Sonar, P. & Leong, W. L. (2021). Enhancing the electrochemical doping efficiency in diketopyrrolopyrrole-based polymer for organic electrochemical transistors. Advanced Electronic Materials, 7(1), 2000701-. https://dx.doi.org/10.1002/aelm.202000701
Project: M4081866
2018-T2-1-075
I1801E0030 
A1784c019
Journal: Advanced Electronic Materials
Abstract: The increasing interest in organic electrochemical transistors (OECTs) for next-generation bioelectronic applications motivates the design of novel conjugated polymers with good electronic and ionic transport. Many conjugated polymers developed for organic field-effect transistors (OFETs) exhibit high charge carrier mobilities but they are not suitable for OECTs due to poor ion-uptake arising from the non polar alkyl chain substituted on the conjugated backbone. They are also sensitive to moisture, resulting in poor performance in aqueous electrolytes. Herein, the widely used conjugated building block diketopyrrolopyrrole (DPP) is used and functionalized it with polar triethylene glycol side chains (PTDPP-DT) to promote ion penetration. The electrical performance of PTDPP-DT based OECT in two types of aqueous electrolytes is studied and the electrochemical doping response is investivated. It is found that the tetrafluoroborate (BF4−) anion with large crystallographic radius allows high-efficiency electrochemical doping of the PTDPP-DT polymer, and thus gives rise to the high transconductance of 21.4 ± 4.8 mS with good device stability, where it maintained over 91 % of its doped-state drain current after over 500 cycles of pulse measurement.
URI: https://hdl.handle.net/10356/154215
ISSN: 2199-160X
DOI: 10.1002/aelm.202000701
DOI (Related Dataset): 10.21979/N9/MVAOOB
Schools: School of Electrical and Electronic Engineering 
Rights: This is the peer reviewed version of the following article: Wu, X., Liu, Q., Surendran, A., Bottle, S. E., Sonar, P. & Leong, W. L. (2021). Enhancing the electrochemical doping efficiency in diketopyrrolopyrrole-based polymer for organic electrochemical transistors. Advanced Electronic Materials, 7(1), 2000701-, which has been published in final form at https://doi.org/10.1002/aelm.202000701. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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